Improved bailway ohaie



I"T.VC.'HARGRAVESQ No. 66,328.` A l www,

@nimh tstzs strnt @Hirn T. c. H'A'RGRAVE, 0F BOSTON, MASSACHUSETTS.Later; farmelo; 66,328, dated July 2, 1867( wmrsovsn RAILWAY cam.

T0 ALLWHOM 1'I MAY CONCERN:

' -iBe it known that I, T. C. HARGRAVE, of Boston, in the countycf'Suhlk, and Stoteof Massachusetts, have'in'vented en Improvementin'Railwny Truck-Joints; und.; do' hereby declare that the following,token in 4connection withthe drawings which'accompnny and form part ofthis specification', is a description of myginventionsuicient to enablethose skilled i n the nrt topractise it.

Thisinvention relates to means for securing trnck-rails in theirchu-irs, especiallywhen :rjoint of the track made atjtwo hdjaccntends'of rcils occursat a cha.ir, in which case thc chair and the :nea-nsfor securing *the mils therein fish the joint. The 'invention consistsin combining with a. track-choir and the track-rails, a

'z-'long wedge und a yielding detniner, arranged to operate together s o-ns to prevent displacement of the wedge by ordinary wenr and jar of thetrnck,fnnd yet allow the wedge to be driven in either direction so as totighten o r loosen 'the track-rail in its choir according as the wedgeis driven in one or the other direction. The drawings represent twoforms or modifications` of embodiments of my invention, Figure 1 showingin plan 'a chair, its rail, and my additions thereto, which are alsoshown in section in Figure?, end Figure 3 being4 .likesen similar plan,lthe section through which .is shoyllLct Figure 4.

In figs. 1 and'2 the chuir body is marked a', the ruil 6, the wedge c,the detniner d, the spring et the bach; of the detainer e, sgi-.d springbeing prei'erohly of rubber. In figs. 1 and 2 the wedge is shown :is aiiuttened taper tube, \vith)indentntio1is on the side adjacent tothedetainer, which hos cor-responding projections thereon,

which act on the wedge somewhat in the manncriof' pnwls on the teeth ofa rock or ratchet. "The other side of the 'wedge comes directly intocontuctwith one side of the rails, the said side thereof being forced bythe wedge into contact'with thelchair, so that when njoint of therailsoccurs in a chair,it und the wedge iish the joint. This wedge I preferto marke as a. cest tube of iron, the necessary indentatons bein'gmadein the mould. The detainer maybe either of wrought orrcost iron, :ind a.recess of suitable .size for thereception of it and the spring e is madein the chair, which prevents thcmrfro'm moving longitudinally with. thewedge. The spring always keeps the projections on the detaiuer in meshor gear with the indentntions` in the wedge, except when the wedge ispurposely andpowerfully driven by blows applied to'one of its ends, whenthe inclined form of the'said projections and indentations causesthejspring to yield enough to permit slightlongitudnnl movements of thewedge. The construction shown in figs. Send 4 is similarto that shown infigs. 1 und 2, except that the wedge,V instead of acting directlyagainst the sideof the rail,A acts against a block or fish piece, whichubuts against the side of the-'raihsuid piece being murkcdfin thedrawing. l l I .Amongst the adi'antag'es of this construction, it may bementioned that in laying or repairing tracks, no .screws or screw-boltsor wrenches are 1 i eeded, the whole operation of vconfining the railsin their chairs being e'ected by blows from a. laborer-s hammer, and thefastening is cheep and eiicient.

I claim, in' combination with the chairs and rails `of' arailwhy track,anindented wedge and spring detainer, erranged tri-operate togethersubstantially as described.

' T. C; HABLGRAVE.

Witnesses:

lJ. -B. Gossr, Fnimcxs Gouw.

